While the existence of centralized stress formed in the phase inv

While the existence of centralized stress formed in the phase inversion process, such as shrinkage stress from syneresis, resulted in fractured points in the nascent skin surface that finally made it difficult to maintain a uniform structure. Investigations on effects of the dope flow rate and the bore fluid velocity on the morphology of PVDF fiber membranes experimentally confirmed the suggestion. Three model membranes with

double skins, single skin and single skin with macrovoids structures, respectively, were used to test their permeation performance in a CO(2) membrane contactor system. The experimental results show the membranes without an inner skin present higher permeability and lower mass transfer resistance than the membrane with a double skin structure. (C) buy NVP-HSP990 2010 Wiley Periodicals, Inc. Journal of Applied Polymer Science 119: selleck products 1259-1267, 2011″
“A bidimensional analysis of 6 mm hexagonal resonators is described using a double orthonormal basis set for the expansion of field quantities. The analysis takes into account the electrical voltage source

and by means of a unique formalism along with a single calculation restitutes all the types of resonance whatever the thickness to width ratio value through either modal solutions or electrical impedance. An illustrative example gives the capabilities of the method to investigate spurious modes in laterally bounded resonators. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3504611]“
“Dide-Botcazo syndrome is a rare clinical syndrome characterized by a Vorinostat combination of cortical blindness with anosognosia for blindness, amnesia and topographical disorientation, secondary to bilateral occipital cortex lesions also involving the infero-medial temporal lobe structure. We report a case of a man who acutely presented confusion and cortical blindness.

The cerebral angiography demonstrated bilateral occlusion of posterior cerebral artery (PCA). Sequential intravenous (IV) and intra-arterial (IA) thrombolysis were ineffective and the patient developed a complete Dide-Botcazo syndrome.”
“Intercalated and exfoliated nanocomposites of biodegradable poly(butylene adipate-co-terephthalate) (PBAT) and Cloisite 30B (C30B) were fabricated by a solution-casting method to study the effects of the clay loading on the crystallization behavior, thermal stability, and dynamic mechanical properties of PBAT in PBAT/C30B nanocomposites. X-ray diffraction and transmission electron microscopy results indicated the formation of exfoliated nanocomposites at low clay loadings (<5 wt %) and a mixture of exfoliated and intercalated nanocomposites with a clay content of 8 wt % throughout the PBAT matrix.

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